| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel supply device capable of changing a pressure of a fuel to be supplied. SOLUTION: In the fuel supply device 1, a primary pump 10 discharges fuel stored in a fuel tank 5 to a fuel passage 31. A first control valve 15 adjusts a pressure of the fuel discharged by the primary pump 10 at a first pressure value or lower. A check valve 40 is provided at the fuel passage 31, and prevents the back flow of the fuel to the upstream side. A secondary pump 20 discharges the fuel stored in the fuel tank 5 to a discharge passage 33 communicating with the fuel passage 31 at the downstream side of the check valve 40. A second control valve 25 adjusts a pressure of the fuel discharged by the second pump at a second pressure value or lower, the second pressure value higher than the first pressure value. Accordingly, the pressure of the fuel supplied to the outside of the fuel tank 5 via the fuel passage 31 and the discharge passage 33 is variably controlled. COPYRIGHT: (C)2012,JPO&INPIT |
